I can't find an answer for this and it may be because I don't know how to phrase the question.
I'm using wall
to broadcast a message to open terminals once a day. When it does, the terminal users' prompts will disappear until they press ENTER. The wall command is
wall -n wall message
And for lack of a better explanation, here is what it looks like on the users' terminal:
As you can see it just hangs. Pressing ENTER or doing anything will get me back to a prompt. In fact, even though it doesn't look like a prompt, it is, because instead of pressing ENTER I can do a command, or press up arrow to see previous commands, etc.
It's not critical, it just bugs me. I have considered that maybe it's by design, to force users to acknowledge that they've seen the message, although the fact that it only looks like it's not a prompt seems like it defeats that purpose.
wall
text was displayed. this means, e.g., that if there was a partially typed command then pressing enter is exactly the wrong thing to do. pressing up arrow followed by down arrow is probably the best thing to do to get the edit line displayed properly again.